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  1. Home
  2. /Glossary
  3. /Trustless Bridge
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blockchain

Trustless Bridge

A cross-chain bridge that relies on cryptographic proofs rather than trusted intermediaries to verify transactions.

Definition

A cross-chain bridge that relies on cryptographic proofs rather than trusted intermediaries to verify transactions. Light client bridges and ZK bridges fall into this category. They're more secure than trusted bridges but typically slower and more expensive. Most bridge hacks have targeted trusted bridge designs.

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Related Terms

Bridge

A protocol that lets you move tokens between different blockchains.

Cross-Chain

The ability to move assets, data, or messages between different blockchain networks.

Zero-Knowledge Proof (ZK)

Cryptographic proofs that verify something is true without revealing the underlying data.

ABI

Application Binary Interface.

Account Abstraction

A way to make crypto wallets behave more like normal apps by turning every account into a smart contract.

ERC-4337

The Ethereum standard for account abstraction without changing the core protocol.

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